Patent US3497252A successfully refreshed from Google Patents.
US3230084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel photographic products and processes
Assignee: Polaroid Corp
•
Filing: 1959-05-18
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Granted: 1966-01-18
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Expires: 1979-05-18
Abstract
No abstract record available.
Inventors
- 👤 Myron S Simon
- 👤 Stanley H Mervis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:43
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/18; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/28; C09B1/285; C09B1/50; C09B1/51; C09B1/515; C09B1/5155; C09B33/00; C09B33/02; C09B33/06; C09B5/00; C09B5/24; C09B5/2409; C09B5/2436; C09B5/2445; C09B5/2454; C09B5/2463; C09B5/2472; G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18; Y; Y10; Y10S; Y10S430/00; Y10S430/156
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A PROCESS OF FORMING TRANSFER IMAGES IN COLOR WHICH COMPRISES THE STEPS OF EXPOSING A PHOTOSENSITIVE ELEMENT COMPRISING A PLURALITY OF LAYERS INCLUDING A LAYER CONTAINING A SILVER HALIDE EMULSION, AT LEAST ONE OF SAID LAYERS CONTANINING A DYE SELECTED FROM THE GROUP CONSISTING OF AZO AND ANTHRAQUINONE DYES WHICH POSSESS NOT LESS THAN ONE AND NOT MORE THAN TWO GROUPS SELECTED FROM THE GROUP CONSISTING OF THE ALKOXALYL AND ARYLOXALYL MONOAND DIESTERS OF ORTHO- AND PARA-DIHYDROXYPHENYL GROUPS; CONTACTING THE EXPOSED PHOTOSENSITIVE ELEMENT WITH AN AQUEOUS ALKALINE SOLUTION; THEREBY PROVIDING HYDROLYSIS OF SAID ESTER GROUPS, SUBSEQUENT TO PHOTOEXPOSURE, AND DEVELOPMENT OF THE EXPOSED SILVER HALIDE EMULSION; IMMOBILIZING SAID DYE IN DEVELOPED AREAS OF SAID PHOTOSENSITIVE ELEMENT, AS A FUNCTION OF THE POINT-TO-POINT DEGREE OF EXPOSURE OF EMULSION; THEREBY PROVIDING AN IMAGEWISE DISTRIBUTION OF MOBILE DYE, IN UNDEVELOPED AREAS OF SAID PHOTOSENSITIVE ELEMENT; AND TRANSFERRING, BY IMBIBITION, AT LEAST A PORTION OF SAID IMAGEWISE DISTRIBUTION OF MOBILE DYE TO A SUPERPOSED IMAGE-RECEIVING ELEMENT TO IMPART THERETO A DYE IMAGE.
Claim 2
Dependent Claim
168 words
A PROCESS OF FORMING TRANSFER IMAGES IN COLOR WHICH COMPRISES THE STEPS OF EXPOSING A PHOTOSENSITIVE ELEMENT COMPRISING A PLURALITY OF LAYERS INCLUDING A LAYER CONTAINING A SILVER HALIDE EMULSION, AT LEAST ONE OF SAID LAYERS CONTANINING A DYE SELECTED FROM THE GROUP CONSISTING OF AZO AND ANTHRAQUINONE DYES WHICH POSSESS NOT LESS THAN ONE AND NOT MORE THAN TWO GROUPS SELECTED FROM THE GROUP CONSISTING OF THE ALKOXALYL AND ARYLOXALYL MONOAND DIESTERS OF ORTHO- AND PARA-DIHYDROXYPHENYL GROUPS; CONTACTING THE EXPOSED PHOTOSENSITIVE ELEMENT WITH AN AQUEOUS ALKALINE SOLUTION; THEREBY PROVIDING HYDROLYSIS OF SAID ESTER GROUPS, SUBSEQUENT TO PHOTOEXPOSURE, AND DEVELOPMENT OF THE EXPOSED SILVER HALIDE EMULSION; IMMOBILIZING SAID DYE IN DEVELOPED AREAS OF SAID PHOTOSENSITIVE ELEMENT, AS A FUNCTION OF THE POINT-TO-POINT DEGREE OF EXPOSURE OF EMULSION; THEREBY PROVIDING AN IMAGEWISE DISTRIBUTION OF MOBILE DYE, IN UNDEVELOPED AREAS OF SAID PHOTOSENSITIVE ELEMENT; AND TRANSFERRING, BY IMBIBITION, AT LEAST A PORTION OF SAID IMAGEWISE DISTRIBUTION OF MOBILE DYE TO A SUPERPOSED IMAGE-RECEIVING ELEMENT TO IMPART THERETO A DYE IMAGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |